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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Anisimkin, V.I. |
| Copyright Year | 1986 |
| Abstract | Acoustic plate modes of different orders n, having equal velocities vn close to that of the longitudinal BAW vL, are numerically studied in crystals of different symmetries. Three families of the modes with vn ~ vL, each at relevant plate thickness h/λ = (h/λ)n, are found (h is the thickness, λ is the wavelength): the generalized Lamb mode with comparable longitudinal u1, shear-horizontal u2, and shear-vertical u3 displacements, the Anisimkin Jr. (AN) mode with u1 ≫ u2 and u3, and u1 ~ constant ≠ 0 at any depth, and the quasilongitudinal (QL) mode with u1 > u2, and u3, but u1 ≠ constant over the plate thickness. Existence of the families does not depend on anisotropy or piezoelectric properties of the plate, but on the closeness of the mode velocity vn to the BAW velocity vL, the value of the dispersion slope dvn/d(h/λ) at vn = vL and h/λ = (h/λ)n, and the proximity of the plate thickness (h/λ)n supporting the mode, to the thickness (h/λ)R providing transverse BAW resonance between plate faces. The Lamb modes approach vn = vL at irregular (h/λ)n far from resonance (h/λ)R and at large dvn/d(h/n) ~103 m/s. The two other modes are characterized by lower dispersion dvn/d(h/n) <; 103 m/s and regular (h/λ)n close to the resonance (h/λ)R. Because both modes have small vertical displacement on plate faces and propagate almost entirely within the crystals, they are attractive for liquid sensing. |
| File Size | 674656 |
| File Format | |
| ISSN | 08853010 |
| Volume Number | 57 |
| Issue Number | 9 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-09-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Dispersion Tin Crystals Acoustics Zinc oxide Anisotropic magnetoresistance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Acoustics and Ultrasonics Instrumentation Electrical and Electronic Engineering |
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